wgpu 0.13.1

Rusty WebGPU API wrapper
Documentation 
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struct VertexOutput {
    @builtin(position) position: vec4<f32>,
    @location(0) tex_coords: vec2<f32>,
};

@vertex
fn vs_main(@builtin(vertex_index) vertex_index: u32) -> VertexOutput {
    var result: VertexOutput;
    let x = i32(vertex_index) / 2;
    let y = i32(vertex_index) & 1;
    let tc = vec2<f32>(
        f32(x) * 2.0,
        f32(y) * 2.0
    );
    result.position = vec4<f32>(
        tc.x * 2.0 - 1.0,
        1.0 - tc.y * 2.0,
        0.0, 1.0
    );
    result.tex_coords = tc;
    return result;
}

@group(0)
@binding(0)
var r_color: texture_2d<f32>;
@group(0)
@binding(1)
var r_sampler: sampler;

@fragment
fn fs_main(vertex: VertexOutput) -> @location(0) vec4<f32> {
    return textureSample(r_color, r_sampler, vertex.tex_coords);
}